🔍 Code Extractor

function init_database

Maturity: 53

Initializes a Neo4j database with required schema constraints, creates an AuditTrail node, and migrates existing audit events.

File:
/tf/active/vicechatdev/CDocs/db/__init__.py
Lines:
62 - 89
Complexity:
moderate

Purpose

This function sets up the database infrastructure for the CDocs application by establishing schema constraints, ensuring the existence of a central AuditTrail node for tracking changes, and migrating any pre-existing audit events to the new structure. It serves as a one-time setup or migration function that should be called during application initialization or deployment.

Source Code

def init_database() -> bool:
    """
    Initialize database with required schema constraints.
    
    Returns:
        True if initialization was successful
    """
    driver = get_driver()
    try:
        from CDocs.db.schema_manager import initialize_schema, ensure_audit_trail_exists, migrate_audit_events
        
        # Initialize schema
        schema_result = initialize_schema(driver)
        
        # Create AuditTrail node if it doesn't exist
        audit_trail_uid = ensure_audit_trail_exists(driver)
        if not audit_trail_uid:
            logger.error("Failed to create AuditTrail node")
            return False
            
        # Migrate existing audit events
        migration_result = migrate_audit_events(driver)
        logger.info(f"Audit trail migration: {migration_result.get('message')}")
        
        return schema_result
    except Exception as e:
        logger.error(f"Error initializing database schema: {e}")
        return False

Return Value

Type: bool

Returns a boolean value: True if all initialization steps (schema creation, audit trail node creation, and audit event migration) completed successfully; False if any step failed or an exception occurred during the process.

Dependencies

  • neo4j
  • logging

Required Imports

from CDocs.db.db_operations import get_driver
import logging

Conditional/Optional Imports

These imports are only needed under specific conditions:

from CDocs.db.schema_manager import initialize_schema

Condition: imported inside function during execution

Required (conditional) 
from CDocs.db.schema_manager import ensure_audit_trail_exists

Condition: imported inside function during execution

Required (conditional) 
from CDocs.db.schema_manager import migrate_audit_events

Condition: imported inside function during execution

Required (conditional)

Usage Example

from CDocs.db.db_operations import init_database
import logging

# Configure logging
logging.basicConfig(level=logging.INFO)

# Initialize the database
success = init_database()

if success:
    print("Database initialized successfully")
else:
    print("Database initialization failed")
    # Handle failure (e.g., exit application, retry, alert admin)

Best Practices

  • Call this function only once during application setup or deployment, not on every application start
  • Ensure Neo4j database is running and accessible before calling this function
  • Check the return value and handle initialization failures appropriately (e.g., prevent application startup)
  • Review logs after execution to verify all migration steps completed successfully
  • Run this function with appropriate database permissions to create constraints and nodes
  • Consider implementing idempotency checks if this function might be called multiple times
  • In production environments, consider running this as part of a deployment script rather than application code
  • Monitor the audit trail migration message in logs to understand how many events were migrated

Tags

database initialization schema migration neo4j setup audit-trail constraints bootstrap

Similar Components

AI-powered semantic similarity - components with related functionality:

  • function initialize_schema 83.3% similar

    Initializes the Neo4j database schema by creating required constraints, indexes, root nodes, audit trails, and migrating existing data structures to current schema versions.

    From: /tf/active/vicechatdev/CDocs/db/schema_manager.py

  • function migrate_audit_trail 60.4% similar

    Migrates existing audit events from a legacy format to a new AuditTrail structure in a Neo4j database, returning migration statistics.

    From: /tf/active/vicechatdev/CDocs/db/db_operations.py

  • function validate_schema 60.1% similar

    Validates that a Neo4j database schema contains all required constraints and node labels for a controlled document management system.

    From: /tf/active/vicechatdev/CDocs/db/schema_manager.py

  • function init_connections 60.0% similar

    Initializes and returns a Neo4j database session and driver connection using configuration settings.

    From: /tf/active/vicechatdev/offline_docstore_multi_vice.py

  • function initialize_approval_workflow_types 59.6% similar

    Initializes default approval workflow types in a Neo4j database by creating or updating four predefined workflow type nodes (STANDARD, DEPARTMENT, QUALITY, REGULATORY) with their configurations.

    From: /tf/active/vicechatdev/CDocs/db/schema_manager.py
← Back to Browse